Install Hono and add /health endpoint in hono/ directory

[Copilot]

This PR sets up the Hono web framework and implements a health check endpoint as requested in the issue.

Changes Made

Project Setup

• Initialized Node.js project with pnpm as the package manager
• Added TypeScript configuration with strict type checking
• Set up ESLint with TypeScript support for code quality
• Configured Vitest for testing following TDD principles
• Added tsx for TypeScript execution

Hono Framework Implementation

• Created hono/ directory structure
• Implemented Hono app with /health endpoint that returns:

  {
    "status": "ok",
    "message": "Service is running"
  }

• Added server entry point using @hono/node-server adapter
• Server runs on port 3000

Testing & Quality

• Added comprehensive test suite using Vitest
• Tests cover the health endpoint response, HTTP method handling, and 404 responses
• All tests pass with 100% coverage of the implemented functionality
• ESLint configuration ensures code quality

Developer Experience

• Added npm scripts for development:
  • pnpm dev - Start development server with watch mode
  • pnpm start - Start production server
  • pnpm build - TypeScript type checking
  • pnpm test - Run tests in watch mode
  • pnpm test:run - Run tests once
  • pnpm lint - Lint code
• Updated README with comprehensive documentation
• Added proper .gitignore for Node.js projects

Usage

The health endpoint can be accessed at GET /health and returns a 200 status with service information:

curl http://localhost:3000/health
# Returns: {"status":"ok","message":"Service is running"}

Testing

All functionality has been thoroughly tested:

• Health endpoint returns correct JSON response
• Server handles different HTTP methods appropriately
• 404 responses for non-existent routes
• TypeScript compilation passes
• ESLint passes with no warnings

Fixes #1.

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